Manufacture of textile fibers from animal hair and bristles



Patented July 17, 1928.

UNITED STATES PATENT OFFICE.-

. v WILHELI mum SCKWEITZEB, OF HEIDELBEBG, GERMANY, ASBIGNOB, B! num- ASSIGNmTS, TO AIEBICAN LANIL J'IBBIY.

CORPORATION, A CORPORATION OF nw IANUIACTUBE OI TEXTILE FIB BB8 FROM ANIMAL HAIR ANT) BBIBTLIS.

10 Drawing. Application fled Iovember 17, 1922, Serial In. 601,646, and Germany Iebmary 18, ms.

A known manufacture of textile fibers from animal hair and bristles consists in treating the material with chlorinating or oxidizing agents and then subjecting the chlorinated or' oxidized fibers to subsequent treatment with soap and soluble oils, or with agents having an alkaline reaction;

for the latter subsequent treatment it has hitherto been the rule to use a large excess of alkali. In the preferred process, the chlorinating or oxidizing agent is used in proportion which exceeds 12 per cent of the weight of the material in the case of chloride of lime and in the case of chlorine litres 16 of the gas to 1 kilo of the material.

The present invention relates to the manufacture of textile fibers from animal hair and bristles b treatment of the chlorinated or oxidized bers with alkali, but differs 20 from the processes hitherto proposed in that the alkali or the alkaline agent for the subsequent treatment of the fibers is used only in such proportion' that only adistinct alkaline reaction is produced. After'this g5 treatment the fibers may be washed, dried, or in some cases, treated with soap or soluble oils in known manner. 1

The following example illustrates the invention:

oxidized by means of a cold acidified filtered solution from 100 kilos of chloride of lime for about half an hour and are then well washed. v 1

The cardings are thenpassed through a cold bath consisting of a caustic soda solution containing 0.1 to.0.15 gram of caustic soda per 100 cc. of water, 30 litres of the bath being used per kilo of fiber. After this treatment follow two washing baths.

100 kilos of cross bred car-dings are,

p The goods may then be dried on heated cylinders.

The essence of the invention is the use of a small excess of alkali. When a solution ofcaustic soda of .1 per centstren i; for 46 example, actsupon oxidized anima ,fibers, the easily soluble albumin bodies pass into solution and are afterwards washed away; by this invention, however, this does not happen as the alkali is consumed informing 50 a salt. Thus by the invention the dissolution of albumin bodies is avoided and the oxidized material suffers much less loss of weght than in the known prQcesses.

What Iclaimisz I 1. A' process for theprodu'ction Oftllliil'lill fibers suitable-for use inthe production of textile fabrics. which consists in taking animal fibers which have been oxidized and subjecting the same to a bath of caustic soda solution from 0.1% to 0.15% in strength and sufiicientto form an alkaline salt upon the fibers whilst insilfiicient in'stren 'h' to dissolve the albumin bodies presentt erein,

washing the thus treated 'fibersand dryin the same.

2. The process of treating oxidized or H chlorinated animal fibers to produce textile fibers, which consists in passing the fihers through a caustic soda solution containing 0.1 to 0.15 grams of caustic soda per 100 cc."

of water, approx mately 30 litres'of thebath being used per kilo of fiber, thence washing the treated fiber and drying the same.

In witness whereof I have hereunto signed I my name this: 2nd day'gf November 1922. WILHELM HELMUT so nwn irzsa; 

